Due to NASA regulations requiring the use of secure HTTPS connections for all web access, older versions of NASA Viz using insecure HTTP connections (1.9.4 and earlier) will no longer be able to access the NASA Viz web server or story feed after March 2017. Users with iOS devices capable of running iOS 6 or later should upgrade NASA Viz to the latest version. Older devices will still be able to run the older version of the app to view stories previously downloaded and saved for offline use, but attempts to connect to the NASA Viz server for new stories will fail. We apologize for the inconvenience. You can continue to follow us on the web and at our social media outlets: nasaviz.gsfc.nasa.gov